Key Financial Data Of Reporting Company
| Concept | As at 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | As at 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|
| Key financial data of reporting company | ||||||
| Business results of reporting company | ||||||
| Net sales | — | 
                                                32,512,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,661,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                33,079,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | 
                                                2,139,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,344,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                35,246,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                32,161,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,898,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Total assets | 
                                                53,419,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                48,974,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,780,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Basic earnings (loss) per share | — | 
                                                127.18
                                                
                                             | 
                                                102.38
                                                
                                             | — | — | 
                                                18.84
                                                
                                             | 
| Diluted earnings per share | — | 
                                                124.71
                                                
                                             | 
                                                100.52
                                                
                                             | — | — | 
                                                18.49
                                                
                                             | 
| Equity-to-asset ratio | 
                                                0.649
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | — | 
                                                0.648
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | 
                                                0.638
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | 
                                                3,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,430,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) investing activities | — | 
                                                2,154,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,060,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,447,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net cash provided by (used in) financing activities | — | 
                                                -3,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -7,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and cash equivalents | 
                                                21,845,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                19,178,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,878,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — |